# A212071 (b-file synthesized from sequence entry)
0 1
1 2
2 13
3 114
4 1150
5 12586
6 145299
7 1741844
8 21475146
9 270570300
10 3468352701
11 45089941936
12 593082894768
13 7878407177270
14 105542811922950
15 1424267372100456
16 19343105144742098
17 264182048662182420
18 3626176386241346070
19 49995713597946235350
20 692084935397470961346